Rail vehicle



Aug. 7, 1928.

J.- GEIGER Run vmnm Filed llay 21. 1926 Patenteil Ag. 7, 1928.

.UNITED STATES PATENT OFFICE.

JOSEF GEIGER, OF AUGSBURG, GEIRMANY, ASSIGNOR T MASCHINENFABBIK AUGS- BURG-NUERNTBERG, AKTIENGESELLSCHAFT, OF AUGSBURG, GERMANY, A COB- I'ORATION OF GERMANY.

RAIL VEHIGLE.

Applii:ation filed l[ay 21, 1926, Serial N0. 110,637, and in Germany Ju ne 2 1925.

This invention relates to rail vehicles, especially motor vehicles which are operated by combustion engines by means of an intermediate toothed gearing Which is resiently supported by the driving axle. In

the known arrangement 0f this gear transmission the gear wheel, which transmits the power t0 the driving axle, is mounted rigidly upon the latter. By reason 0f the gear being resiliently mounted upon the driving axle ehe Vibrations 0f the latter, which occur during operation, are immediately transmitted by this wheel upon the wheel which is meshing therewith, whereby the proper conditions 0f mesh are unfavorably influenced. In case of suddenly occurring shocks ifi may happen that the faces of the teeth which are meshing with each other Will be Caused to be unfavorably displaced and by this an abnormal.wear and eventua1ly also fractur of the teeth may be the result.

The object of this invention therefore is the provision of a novel connec'tion between the gear-wheel and the driving ax1e, the gear-wheel, which is arranged upon the driving axle, beingv loosely mounted upon a ball journal and resiliently coupled with the drivin axle by means 0f a properly constructe coupling member. With this construction the axl of the gear may 'to a certain extent swin in the manner of a. pendulum in case 0 arising shocks and vibrations, while the gear wheel itself will rernain in proper mesh with the pinion appertaining thereto. The resilient coupling member will thereby ensure a quiet trans mission of ower without any shock from the driving motor to the drivin axle.

In the drawing' an example 0 a construction according to this invention is shown.

Fi 1 is a. diagrammatic top-vfew showing t e general arrangement of the gearing according to this invention,

Fig. 2 is a, section taken on the line A--B of Fig. 1, which shows the gear box resiliently mounted upon the driving axle.

Fig. 3 is a vertical section showing the arrangement of the gear-wheel on the driving axle, und

Fig. 4 is a secti'on taken 011 the line C-D of F1g. 3. A

The ear box or frame a is resiliently -mounte by t;he springs b upon the driv- 1ng axle o and suspended ab the point d m proper manner 011 the frame of the 'Vehicle. The driving axle 0 is provided with 21- spherically formedj'journal e, upon mounted upon the driving axle. said disk being provided with diametrically opposed recesses h. The coupling membefs 01 catch pins vl a re held at one end in the gearwheel f and project into the recesses in the disk g, said pins having the fo1m of ordinary bolts and being provided with springs l.;, which press against the walls of the recesses a.

The power to -be conveyed t0. th e gear wheel f through the gearing is transmitted by said gear-wheel f through the resilently connected pins 01 bolts z and springs k to fche disk g and from the latter to the driv- 1ng axle c. By reason of the vibrations occurring during the travel of the vehicle over the rail joints, and on accoui1t of the resilient suspension of the gear box a relatively t0 the driving axle, as shown in Fig. 2, it may happen that the latter will temporarily be placed obliquel to fihe intermediate or jack shaft Z. T is would cause an improper onesided mesh between the gears f andm. By making the seats of the gear Wheel f in the form 0Lspherical surfaces corresponding to the spherical couformation of the ball journal, the driving axle may easily adjust itself within the hub of the gear wheel, so that the proper coudition of mesh between 'the two ge2 rs will in no way be unfavorably afl'ected. Due to the' resilient connection of the coupling members i the transmission of the ower to tl 1e driving axle will be accompl1shed in such a manner, that no shocks or vibra tions will occur. The gearing therefre operates complet ely quieft a'nd any improper strain upon the faces of the teeth is positively avdided.

I claim:

1. In combination w ith a rail vehicle operated by a c0mbustion motor, a, driving axle carrying a ball jounnal, a gear-wheel mounted loosely upon saidball journal, resilient Insans for coupling said gear-wheel to said driving axle, seid resilient means comprising a disk, Which is rigidly munted upon sa1d driving axle, driving pins mounted on said gear-wheel, said drivin pins projecting into recesses in said dis and springs interposed between said pins und. the walls of sind recesses of seid disk.

2. In a rail vehicle operated by a combustion motor, a driving axle, a, gear member he1d concentric with said axle at all times and supported thereon to ermit relative tilting of the axes of the ax e and the gear member, a disk member on said driving axle, driving pins supported in one of said members und. having a yieldin connection t0 the other said member, an means fo'r driving said gear member.

3. A driving connection f01' combustion motor operated rail vehicles comprising a driving axle, a gear member maintained in concentric relation with said axle und sup- Ported thereon for rocking movements in relation to the axle axis, a frame resiliently supported on said axle, a motor driven shaft mounted in said frame, a ear on said shaft in driving engagernent wit: 1 said gear member, a disk member fixed on said driving axle, und driving means fixed to one of said membe'rs und having a. yielding connection with the other of said members.

4. In a motor driven rai1 vehicle, u frame, a driving axle resiliently mounted in said frame, a ball journal on said axle, a gearwheel movably mounted on said ball journa1, a member fast on said axle, a resil ient driving connection between snid member and said genr, und means in said frmne for driving said gear.

5. In a motor driven 1ail vchicle, a framc, a driving axle resiliently mounte l thcreon, a motor driven shaft journnled in said frame, a driving gear up0n said shnft, a ball journal on sznd driving axle, a gearwheel mounted for universal tilting movc- 1nent on said ball journal und opcrating said driving gear, a mernber fastened to sah] moto1 drivcn shaft, und a rcsilient connection between said member :1nd said gearwheel.

In testimony whereof I have affixed my signatura JOSEF GEIGER. 

